What is the range of the signum function?

What is the range of the constant function 1?

What is the range of ph scale

Find the range of the following function:- f(x) = x , x is a real number.

Find the range of the following functions: f(x)=3/(2-x^2) .

Find the range of the following function : f(x)= 1/((2x -3) (x +1)) .

Let L denotes the number of subjective functions f : A -> B , where set A contains 4 elementset B contains 3 elements. M denotes number of elements in the range of the function f(x) = sec^-1(sgmx) + cosec^-1(sgn x) where sg n x denotes signum function of x. And N denotes coefficient of t^5 in (1+t^2)^5(1+t^3)^8 . The value of (LM+N) is lambda , then the value of lambda/19 is

Find the domain and the range of the real function 'f' defined by f(x) = |x-1| .

Write the set of points of discontinuity of the signum function.

Find the domain and range of the following function : |x-1| .